Watch-regulator



(No Model.)

R. B. RIGHMDND.

WATGH RBGULATOB.

No. 395,351. Patented Jan. 1, 1889.

ATTEST |NVENTOR I RQME B. lcHMoND. 5D. W

UNITED STATES PATENT Orricr.

ROME B. RICHMOND, OF DECATUR, LLNOS.

WATCH- REG U LTOR.

SPECIFICATION forming part of Letters Patent No. 395,351, dated January1, 1889.

Application filed May 7, 1888. Serial No. 273,003. (No model.)

T0 all whom it 72m3/ con/0877r.'

Be it known that I, ROME B. RICHMOND, of the city of Decatur, county ofMacon, and State of Illinois, have invented a certain new and usefulMicroineter Tatch-Regulator, of which the following' is a specificationsuteiently full, clear, and exact to enable persons skilled in the artto make and use the same.

My invention comprises a graduated are fixed te the watch-plate, an armvvith its pivot yieldingly connected with the -are and approximatelyconccntric With the eirele the arc would form if continued, afriction-roller in the arm bearing with a yielding pressure against theouter periphery of the are, and a svvivel-head on the arm between thepivot thereof and the frietion-roller, adapted to carry the svvingingend of an ordinary regulatorpointer, all as hereinafter set forth indetail and specifically claimed.

In the (lrau'ings accoinpanying and forxnng apart of this specification,Figure 1 represents a watch-plate with my device affixed thereto. Fig. 2represents the device enlarged and detached from the watch-plate. Fig. 3represents the device in section on (lotted line :v in Fig. 2, thepointer being omitted.

Like reference-letters iudicate like parts in the different (igures.

The Watch-plate is designatcd by referenceletter A, theregulator-pointer by a, the graduated are by Z), the arin by c, the headof the frietion-roller by (7, the roller by d', the swivel-head by e,the yielding pivot of the arm by f, the securing-screvvs for thegraduated l are by q g, and the springs that connect the arc With thearm-pivot by 1/ b'. The swivelhead is slotted to receive the pointer,which acts on the balance-spring in the eustomary manner. The head ofthe friction-pulley has a transverse groove that forms a seat for thedriver vvith which the roller is adjusted with relation to the are. Thesprings b' b' cause the roller to exert a yieldingpressure against theare, th ereby insurin g Constant contact and avoiding stoppages thatmight result from i eecentreity or rregularties in the surface of theare. The a-rm c aets as an index on the graduations of the are, and, asthe sWivel ear- 1 rying the ponter is nearer the pivot than is the are,the motion of the arin 011 the are is greater than the niotiou of theend of the pointer. This peeuliarity enables the pointer to be adj ustedwith great minuteness, and makes the device a mierometer in faet. Byplacing the svvivel nearer the pivot the delicacy of the adj ustment isincrcased. By placing the swivel nearer the are the regulating capacityof the device is incrcased, and these faets may be considered inadapting the regulator to different requirements.

From the foregoing description itvvill be understood that the arm withthe swivel between the pivot and the are may be used independently ofthe yielding pivot When the are is true and the pivot perfectlyconcentric7 and it is obvious that other Well-known forms of Springs maybe substituted for those shown Without the exercisc of invention andwithout atfecting the principle of niy device.

I elaini as new and desire to secure by Letters Patent- 1. A mierometerWitch-regulator comprising a graduated are, an arni pivoted at or nearthe center of the circle that the arc would form if continued, a swivelon the arm between the pivot and the arc, adapted to carry 'theregulating-pointer, and means for adjusting the arin with relation tothe arc, as and for the purpose set forth.

2. A micrometer Watch-regulator comprising a graduated arc, an arxnyieldingly pivoted near the center of the circle that the are Would formif continued, a roller in the arm bearing vvith a yielding' pressureagainst the are, and means for connecting the arm With aregulator-pointer, as and for the purpose set forth.

In mierometer Watch-regulators, in combination, are b,springs b' b',carrying pivot f,

arm c,pivoted at f, roller cl' in arm c, bearing against the peripheryof the are, and svvivel e, adapted to carry pointer a, as and for thepurpose set forth.

In testimony whereof I sign my name in the presence of two subscribingvvitnesses.

ROME B. RICHMOD. Attest:

R. B. HosrETLER, J. O. HosrETLER.

